feature: support function as config for title,classname and suitename

[sarod]

Fixes #54

[palmerj3]

@sarod excellent work! Thanks so much for taking the time to submit an issue and a PR!

My one and only concern with this is that this would be the first deviation in configurability - it's a feature currently only usable if you use the reporter config. I'm actually ok with that if you can foresee that others would have vastly different needs for specifying class name.

The alternative would be to add an additional configuration option that would hardcode this behavior. For instance, having a configuration option called javaJunitClassname: true and it would do as you describe in the issue.

What do you think? I'm fine merging this if you can think of more use-cases that require a function.

Thanks!

[sarod]

Hi @palmerj3,

I understand you concern.

In my case what I actually do with the function is:

• remove a common (src/) prefix from the filepath
• remove the ".test.ts" extension from the file name.
• convert potential other . in the filename to _

Here is the function I'm actually using to compute classname:

classNameTemplate: ({filepath, filename, classname}) => {
   let folder = filepath.substring(0, filepath.length - filename.length);
   if (folder.startsWith('/src')) {
      folder = folder.substring('/src'.length);
   }
   const folderWithDots = folder.replace(/\//g, '.');
   const fileWithoutExtensionOrDots = filename
      .replace(/(\.(spec|test))?\.ts(x)?/, '')
      .replace(/\./g, '_');
   return folderWithDots + fileWithoutExtensionOrDots;
}

We could probably add string and flags properties to support this case but I feel like at some point it would be more cumbersome to try to find the right combination of flags rather than writing a function with a few lines of codes.

So I think supporting functions allows for much more flexibility while keeping the number of configuration options in the project reasonable.

[palmerj3]

Ok makes sense

[palmerj3]

I'll publish a release later today

[sarod]

Excellent. Thanks!

[palmerj3]

@sarod 5.1.0 was just published containing this feature.

Thanks again! Excellent work.

[palmerj3]

https://github.com/jest-community/jest-junit/releases/tag/v5.1.0